Fun, simple, and can be bought in bulk! Load it into your presentation software and go, go, go. These are "one outcome games, so they cannot be played over and over again.
Word Shark
Word Shark is basically hangman, but underwater… with a shark. You enter your own words/phrases and the game will handle the rest. When a student guesses a letter, just hit that letter on the keyboard. If it’s correct, that letter will be revealed. If it’s wrong, one of three walls that separate the scuba diver and shark will lower. Once they get four wrong letters, the shark will attack… by launching a fireball from its mouth.